Graduate LLVM to the big leagues by embedding a LISP processor into TableGen.

Ok, not really, but do support some common LISP functions:

* car
* cdr
* null


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71805 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGLexer.cpp b/utils/TableGen/TGLexer.cpp
index 6215a72..faf1e75 100644
--- a/utils/TableGen/TGLexer.cpp
+++ b/utils/TableGen/TGLexer.cpp
@@ -450,6 +450,9 @@
   if (Len == 5 && !memcmp(Start, "subst", 5)) return tgtok::XSubst;
   if (Len == 7 && !memcmp(Start, "foreach", 7)) return tgtok::XForEach;
   if (Len == 4 && !memcmp(Start, "cast", 4)) return tgtok::XCast;
+  if (Len == 3 && !memcmp(Start, "car", 3)) return tgtok::XCar;
+  if (Len == 3 && !memcmp(Start, "cdr", 3)) return tgtok::XCdr;
+  if (Len == 4 && !memcmp(Start, "null", 4)) return tgtok::XNull;
 
   return ReturnError(Start-1, "Unknown operator");
 }